Moves view_model and related classes to views. This way I can use it

in the tabstrip.

BUG=none
TEST=none
Review URL: https://chromiumcodereview.appspot.com/10031012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@131472 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 55 insertions, 0 deletions

diff --git a/ui/views/view_model.cc b/ui/views/view_model.cc
new file mode 100644
index 0000000..8ce2474
--- /dev/null
+++ b/ui/views/view_model.cc
@@ -0,0 +1,55 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/views/view_model.h"
+
+#include "base/logging.h"
+#include "ui/views/view.h"
+
+namespace views {
+
+ViewModel::ViewModel() {
+}
+
+ViewModel::~ViewModel() {
+  // view are owned by their parent, no need to delete them.
+}
+
+void ViewModel::Add(View* view, int index) {
+  Entry entry;
+  entry.view = view;
+  entries_.insert(entries_.begin() + index, entry);
+}
+
+void ViewModel::Remove(int index) {
+  if (index == -1)
+    return;
+
+  entries_.erase(entries_.begin() + index);
+}
+
+void ViewModel::Move(int index, int target_index) {
+  if (index == target_index)
+    return;
+  Entry entry(entries_[index]);
+  entries_.erase(entries_.begin() + index);
+  entries_.insert(entries_.begin() + target_index, entry);
+}
+
+void ViewModel::Clear() {
+  Entries entries;
+  entries.swap(entries_);
+  for (size_t i = 0; i < entries.size(); ++i)
+    delete entries[i].view;
+}
+
+int ViewModel::GetIndexOfView(const View* view) const {
+  for (size_t i = 0; i < entries_.size(); ++i) {
+    if (entries_[i].view == view)
+      return static_cast<int>(i);
+  }
+  return -1;
+}
+
+}  // namespace views